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Prepn process of thermoplastic wood-plastic composite material based on polyethylene vinyl acetate

A technology of vinyl acetate-based heat and wood-plastic composite materials, applied in the field of polymer processing, can solve the problems of restricting the development of wood-plastic materials, few varieties, and limited types, etc., and achieve the effect of wide application and industrialization prospects

Inactive Publication Date: 2008-11-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermoplastics commonly used in the preparation of wood-plastic materials mainly include polyvinyl chloride (PVC) (CN200610034685.7), polyethylene (PE) (Fang Zhengping, China Plastics, 1999, 13 (11), 44; Wu Yuannan, Wu Jun , Journal of Beijing Institute of Graphic Communication, 2006, 15(5), 9; CN99111051.X), polypropylene (PP) (CN02104432.5), etc., the compatibility of wood flour and plastics is only for these types of materials , usually used in guardrails, outdoor road boards, brackets, etc. Although there are certain applications, the types are limited and the varieties are few, which limits the development of wood-plastic materials and prevents them from being widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The raw material components are by weight: 30 parts of ethylene-vinyl acetate copolymer, 60 parts of bamboo powder, 1 part of polyethylene acrylic acid graft (PE-g-AA), 0.3 part of antioxidant 1024, antioxidant 168 is 0.7 part, 5 parts of butyl rubber, 1 part of calcium carbonate, 1 part of silicone oil, 1 part of dioctyl adipate.

[0018] First mix ethylene-vinyl acetate copolymer, bamboo powder, polyethylene acrylic acid graft, antioxidant 1024, antioxidant 168, butyl rubber, calcium carbonate, silicone oil, dioctyl adipate on a high-speed mixer Evenly, the speed of the high-speed mixer is 3000 rpm, and then the mixture is put into a twin-screw extruder and extruded to make pellets. The screw temperature is 80 / 110 / 120 / 130 / 130 / 130 ℃, and the speed is 90 rev / min, the residence time of the material in the screw is 6 minutes, after the extruded material is cooled, it is cut into pellets by a pelletizer to obtain pellets, which are dried in a vacuum oven at 60 ° C for 48 h...

Embodiment 2

[0021] The raw material components are by weight: 80 parts of ethylene-vinyl acetate copolymer, 10 parts of bran shell powder, 0.5 part of octadecyl amine chloride, 1 part of antioxidant T501, 0.5 part of antioxidant DLTP, 2.5 parts of polyisobutylene, 2.5 parts of silica, 2 parts of ethylene bis-fatty amide, 1 part of dibutyl phthalate (DBP).

[0022] First, ethylene-vinyl acetate copolymer, bran shell powder, octadecyl amine chloride, antioxidant T501, antioxidant DLTP, polyisobutylene, silicon dioxide, ethylene bis-fatty amide, phthalic acid two The butyl ester is mixed evenly on a high-speed mixer, and the speed of the high-speed mixer is 9000 rpm, and then the mixture is put into a twin-screw extruder and extruded to make pellets. The screw temperature is 90 / 120 / 140 / 150 / 150 / 150°C, the rotational speed is 300 rpm, the residence time of the material in the screw is 1 minute, after the extruded material is cooled, it is cut by a pelletizer to obtain pellets, which are dried...

Embodiment 3

[0025] Raw material components by weight: 40 parts of ethylene-vinyl acetate copolymer, 40 parts of sawdust powder, 2 parts of titanate coupling agent, 1 part of antioxidant 1010, 0.5 part of antioxidant 168, acrylate 10 parts of rubber, 3 parts of kaolin, 1.5 parts of organosilane, 2 parts of acetyl tributyl citrate.

[0026]First mix ethylene-vinyl acetate copolymer, sawdust powder, titanate coupling agent, antioxidant 1010, antioxidant 168, acrylate rubber, kaolin, organosilane, acetyl tributyl citrate on a high-speed mixer Evenly, the speed of the high-speed mixer is 6000 rpm, and then the mixed material is put into a twin-screw extruder and extruded to make pellets. rev / min, the residence time of the material in the screw is 3 minutes, after the extruded material is cooled, it is cut into pellets by a pelletizer to obtain pellets, which are dried in a vacuum oven at 100 ° C for 24 hours to obtain polyethylene-vinyl acetate Base thermoplastic wood plastic composites.

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Abstract

The present invention relates to preparation process of thermoplastic wood-plastic composite material based on ethylene-vinyl acetate copolymer. The thermoplastic wood-plastic composite material is prepared with ethylene-vinyl acetate copolymer and wood powder as main material, and through reaction composition with compatibilizing agent, antioxidant, toughening modifier, stuffing, dispersant and plasticizer, and continuous extruding. It has excellent physical and mechanical performance, and may be used in soft plastic floor board, heat insulating layer, non-skid mat, etc.

Description

technical field [0001] The invention relates to a preparation method of a polyethylene-vinyl acetate-based thermoplastic wood-plastic composite material, and the obtained composite material can be used as a soft plastic floor, a heat insulation layer, a non-slip mat and the like. The invention belongs to the technical field of polymer processing. Background technique [0002] Thermoplastic wood-plastic composite material is a new type of composite material prepared by mixing and processing wood powder, bamboo powder, fruit shell powder, straw powder, bran shell powder or peanut shell powder and thermoplastic as the main raw materials. The development of this material alleviates the shortage of resources and energy caused by the increasing demand for petroleum resources and wood and forest products, and is an effective means to protect the environment and reduce energy consumption. Moreover, thermoplastic wood-plastic composite materials are durable, more durable, and more du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/54C08L97/02C08L75/04C08L51/00B29C47/40B29B9/12C08K5/10
Inventor 戚嵘嵘毛亚鹏王艳玲
Owner SHANGHAI JIAO TONG UNIV